我怎样才能让我的代码正常工作？用户输入不适用于 if、elif 和 else答案

【问题标题】：How can i get my code to work correctly? user input is not working with if, elif, and else我怎样才能让我的代码正常工作？用户输入不适用于 if、elif 和 else
【发布时间】：2021-05-10 02:31:11
【问题描述】：

if、elif 和 else 无法正确处理我的输入。我正在努力做到这一点，所以你必须通过所有三个问题才能进入我的假俱乐部。但问题是，如果您错误地回答了前两个问题而正确回答了第三个问题，您仍然可以进入俱乐部。另外，这是学校的作业，我的老师说我错过了一个标题，我的 if 语句不包含实际淘汰或接受潜在用户的逻辑语句。请帮忙。

def main():
    age = input("are you younger than 21?")
    game = input("what is the game of the day?")
    cool = input("what do you think about school?") 
    
    print("Welcome to Kidz Only.")
    print("are you cool enough to enter?")
    
    if( age == "yes"):
        print("question one is done.")
    if ( game == "super mario bros"):
        print("question two is through.")    
    if ( cool == "i have mixed feelings"):
        print("question three is complete.")
        print("You have passed the quiz. Welcome to Kidz Only!")
        
    else:
        print("Sorry, but you may not enter Kidz Only.")
        
main()

【问题讨论】：

标签： python if-statement input

【解决方案1】：

原因是你说只有( cool == "i have mixed feelings") 然后显示你被允许加入"cool kids"。你也可以使用and来缩短你的代码。

def main():
    age = input("are you younger than 21?")
    game = input("what is the game of the day?")
    cool = input("what do you think about school?") 
    
    print("Welcome to Kidz Only.")
    print("are you cool enough to enter?")
    
    if( age == "yes") and (game == "super mario bros") and ( cool == "i have mixed feelings"):
        print("question three is complete.")
        print("You have passed the quiz. Welcome to Kidz Only!")
        
    else:
        print("Sorry, but you may not enter Kidz Only.")
        
main()

【讨论】：

【解决方案2】：

最后一个 if 与 else 语句相关联，所以即使前两个是错误的，最后一个是正确的，它也会允许你输入。更好的逻辑是为每个要求设置条件。

def main():
    age = input("are you younger than 21?")
    game = input("what is the game of the day?")
    cool = input("what do you think about school?") 
    
    print("Welcome to Kidz Only.")
    print("are you cool enough to enter?")
    
    hasAge = False
    hasGame = False
    hasCool = False

    if( age == "yes"):
        hasAge = True
        print("question one is done.")
    if ( game == "super mario bros"):
        hasGame = True
        print("question two is through.")    
    if ( cool == "i have mixed feelings"):
        hasCool = True
        print("question three is complete.")
        
    if (hasAge and hasGame and hasCool):
        print("You have passed the quiz. Welcome to Kidz Only!")
    else:
        print("Sorry, but you may not enter Kidz Only.")
        
main()

虽然这会导致代码更冗长，但它可以帮助您更好地了解逻辑

【讨论】：